Home / 81,631.60-122,424.21-31,701.04

Finding the Fourth Proportional to 81,631.60, 122,424.21 and 31,701.04

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Solution

The fourth proportional to 81,631.60, 122,424.21 and 31,701.04 is: 47,542.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,631.60 : 122,424.21 = 31,701.04 : x
  2. Step 2: Convert to fraction form
    81,631.60/122,424.21 = 31,701.04/x
  3. Step 3: Cross multiply
    81,631.60x = 122,424.21 × 31,701.04
  4. Step 4: Simplify right side
    81,631.60x = 3,880,974,472.12
  5. Step 5: Solve for x
    x = 3,880,974,472.12/81,631.60
  6. Step 6: Final answer
    x = 47,542.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.